feat: add deterministic goat routine

simulation/state/SimulationStateRecord.gd

@@ -2,7 +2,7 @@ class_name SimulationStateRecord
 extends RefCounted
 
 const SCHEMA_NAME := "the_steward.simulation"
-const SCHEMA_VERSION := 10
+const SCHEMA_VERSION := 11
 const LEGACY_SCHEMA_VERSION := 1
 const EVENT_LEGACY_SCHEMA_VERSION := 2
 const RELATIONSHIP_LEGACY_SCHEMA_VERSION := 3
@@ -11,6 +11,7 @@ const PROVENANCE_LEGACY_SCHEMA_VERSION := 5
 const RETENTION_LEGACY_SCHEMA_VERSION := 6
 const OPPORTUNITY_LEGACY_SCHEMA_VERSION := 8
 const ANIMAL_LEGACY_SCHEMA_VERSION := 9
+const ROUTINE_LEGACY_SCHEMA_VERSION := 10
 const PREVIOUS_SCHEMA_VERSION := 7
 
 var simulation: Dictionary
@@ -95,6 +96,7 @@ static func from_dictionary(record_data: Dictionary) -> SimulationStateRecord:
 			PREVIOUS_SCHEMA_VERSION,
 			OPPORTUNITY_LEGACY_SCHEMA_VERSION,
 			ANIMAL_LEGACY_SCHEMA_VERSION,
+			ROUTINE_LEGACY_SCHEMA_VERSION,
 		]
 	):
 		record_data = _migrate_legacy(record_data, version)
@@ -676,7 +678,8 @@ static func _is_valid_supply_resolution(
 static func _migrate_legacy(legacy_data: Dictionary, version: int) -> Dictionary:
 	var migrated := legacy_data.duplicate(true)
 	migrated["schema_version"] = SCHEMA_VERSION
-	migrated["animals"] = []
+	if version <= ANIMAL_LEGACY_SCHEMA_VERSION:
+		migrated["animals"] = []
 	if version == LEGACY_SCHEMA_VERSION:
 		var village_data: Dictionary = legacy_data.get("village", {})
 		var initial_food := float(village_data.get("food", 0.0))
@@ -727,7 +730,14 @@ static func _migrate_legacy(legacy_data: Dictionary, version: int) -> Dictionary
 		migrated.get("economic_events", []),
 		int((migrated.get("simulation", {}) as Dictionary).get("tick_count", 0))
 	)
-	if version not in [OPPORTUNITY_LEGACY_SCHEMA_VERSION, ANIMAL_LEGACY_SCHEMA_VERSION]:
+	if (
+		version
+		not in [
+			OPPORTUNITY_LEGACY_SCHEMA_VERSION,
+			ANIMAL_LEGACY_SCHEMA_VERSION,
+			ROUTINE_LEGACY_SCHEMA_VERSION,
+		]
+	):
 		migrated["opportunities"] = []
 		var opportunity_simulation_data: Dictionary = migrated.get("simulation", {})
 		opportunity_simulation_data["next_opportunity_id"] = 0